On 2/5/2012 10:21 AM, PICdude wrote:
> Anyone here knows much about these?  I want to make a PCB to fit in an
> existing enclosure with existing buttons, and wondering what I need to
> do for the PCB side.  The always seems to be black, and IIRC this is a
> carbon coating...?  Can I use regular HASL for this?  Or will it
> tarnish over time?  Is there anything DIY I can do to make it
> tarnish-proof?  I only want to make a handful of these, so I expect
> getting PCB's with non-standard coatings will be cost-prohibitive I
> suspect.
>
> Cheers,
> -Neil.
>
>

Something I used before is conductive paint that comes in a kit for=20
repairing the window defogger in cars. It is a brown paint that is very=20
conductive but doesn't tarnish .

Mark


--=20
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